diff --git a/miniprogram/components/exercise-card/index.js b/miniprogram/components/exercise-card/index.js
index 472dcb2..9fe33d0 100644
--- a/miniprogram/components/exercise-card/index.js
+++ b/miniprogram/components/exercise-card/index.js
@@ -21,6 +21,8 @@ Component({
     },
     onTap() {
       const ex = this.data.exercise || {};
+      // 防御：id 缺失时绝不跳转（避免 navigate 到 /api/exercises/undefined 触发 404）
+      if (!ex || !ex.id) return;
       this.triggerEvent('tap', { id: ex.id, exercise: ex });
     }
   }
diff --git a/miniprogram/pages/category/category.js b/miniprogram/pages/category/category.js
index aee0e3e..0a046d8 100644
--- a/miniprogram/pages/category/category.js
+++ b/miniprogram/pages/category/category.js
@@ -84,6 +84,7 @@ Page({
   },
 
   onExercise(e) {
+    if (!e || !e.detail || !e.detail.id) return;
     wx.navigateTo({ url: '/pages/detail/detail?id=' + encodeURIComponent(e.detail.id) });
   }
 });
diff --git a/miniprogram/pages/category/category.wxml b/miniprogram/pages/category/category.wxml
index bb7fae2..c752f85 100644
--- a/miniprogram/pages/category/category.wxml
+++ b/miniprogram/pages/category/category.wxml
@@ -17,7 +17,7 @@
 
     <view class="grid" wx:if="{{exercises.length}}">
       <view class="grid__item" wx:for="{{exercises}}" wx:key="id">
-        <exercise-card exercise="{{item}}" bind:tap="onExercise" />
+        <exercise-card exercise="{{item}}" catch:tap="onExercise" />
       </view>
     </view>
     <view wx:elif="{{!loading}}" class="empty">暂无数据</view>
diff --git a/miniprogram/pages/collection-detail/collection-detail.js b/miniprogram/pages/collection-detail/collection-detail.js
index 6df5867..3f7f035 100644
--- a/miniprogram/pages/collection-detail/collection-detail.js
+++ b/miniprogram/pages/collection-detail/collection-detail.js
@@ -69,6 +69,7 @@ Page({
   },
 
   onExercise(e) {
+    if (!e || !e.detail || !e.detail.id) return;
     wx.navigateTo({
       url: '/pages/detail/detail?from=collection&slug=' +
         encodeURIComponent(this.data.slug) + '&id=' + encodeURIComponent(e.detail.id)
diff --git a/miniprogram/pages/collection-detail/collection-detail.wxml b/miniprogram/pages/collection-detail/collection-detail.wxml
index 583c246..9b1c8dd 100644
--- a/miniprogram/pages/collection-detail/collection-detail.wxml
+++ b/miniprogram/pages/collection-detail/collection-detail.wxml
@@ -22,7 +22,7 @@
     <section-header eyebrow="EXERCISES" title="动作列表" subtitle="共 {{total}} 个动作" />
     <view class="grid" wx:if="{{exercises.length}}">
       <view class="grid__item" wx:for="{{exercises}}" wx:key="id">
-        <exercise-card exercise="{{item}}" bind:tap="onExercise" />
+        <exercise-card exercise="{{item}}" catch:tap="onExercise" />
       </view>
     </view>
     <view wx:elif="{{!loading}}" class="empty">该计划暂无动作</view>
diff --git a/miniprogram/pages/detail/detail.js b/miniprogram/pages/detail/detail.js
index 07010fb..99c650f 100644
--- a/miniprogram/pages/detail/detail.js
+++ b/miniprogram/pages/detail/detail.js
@@ -21,6 +21,11 @@ Page({
     const id = query.id || '';
     const planId = query.planId || '';
     this.setData({ statusBarHeight: app.globalData.statusBarHeight || 20, id, planId });
+    // 防御：id 缺失直接显示空态，避免请求 /api/exercises/ 导致错乱或 404
+    if (!id) {
+      this.setData({ loading: false });
+      return;
+    }
     this.load();
     if (auth.isLogin()) {
       favSvc.exerciseStatus(id).then((r) => {
@@ -117,6 +122,7 @@ Page({
   },
 
   onExercise(e) {
+    if (!e || !e.detail || !e.detail.id) return;
     wx.navigateTo({ url: '/pages/detail/detail?id=' + encodeURIComponent(e.detail.id) });
   },
 
diff --git a/miniprogram/pages/detail/detail.wxml b/miniprogram/pages/detail/detail.wxml
index 5bb3219..3983032 100644
--- a/miniprogram/pages/detail/detail.wxml
+++ b/miniprogram/pages/detail/detail.wxml
@@ -60,7 +60,7 @@
     <view class="block__h eyebrow">相关推荐</view>
     <scroll-view scroll-x class="hscroll">
       <view class="hscroll__item" wx:for="{{related}}" wx:key="id">
-        <exercise-card exercise="{{item}}" compact bind:tap="onExercise" />
+        <exercise-card exercise="{{item}}" compact catch:tap="onExercise" />
       </view>
     </scroll-view>
   </view>
diff --git a/miniprogram/pages/favorites/favorites.js b/miniprogram/pages/favorites/favorites.js
index 7f69ddd..b4d00dc 100644
--- a/miniprogram/pages/favorites/favorites.js
+++ b/miniprogram/pages/favorites/favorites.js
@@ -45,6 +45,7 @@ Page({
   },
 
   onExercise(e) {
+    if (!e || !e.detail || !e.detail.id) return;
     if (this.data.managing) return;
     wx.navigateTo({ url: '/pages/detail/detail?id=' + encodeURIComponent(e.detail.id) });
   },
diff --git a/miniprogram/pages/favorites/favorites.wxml b/miniprogram/pages/favorites/favorites.wxml
index 4f43ecd..1d44673 100644
--- a/miniprogram/pages/favorites/favorites.wxml
+++ b/miniprogram/pages/favorites/favorites.wxml
@@ -10,7 +10,7 @@
     <view class="grid" wx:if="{{list.length}}">
       <view class="grid__item" wx:for="{{list}}" wx:key="id">
         <view class="item">
-          <exercise-card exercise="{{item}}" bind:tap="onExercise" />
+          <exercise-card exercise="{{item}}" catch:tap="onExercise" />
           <view wx:if="{{managing}}" class="remove" data-id="{{item.id}}" catchtap="onRemove">移除</view>
         </view>
       </view>
diff --git a/miniprogram/pages/index/index.js b/miniprogram/pages/index/index.js
index f1b122d..0a226d9 100644
--- a/miniprogram/pages/index/index.js
+++ b/miniprogram/pages/index/index.js
@@ -81,6 +81,7 @@ Page({
   },
 
   onExercise(e) {
+    if (!e || !e.detail || !e.detail.id) return;
     wx.navigateTo({
       url: '/pages/detail/detail?id=' + encodeURIComponent(e.detail.id)
     });
diff --git a/miniprogram/pages/index/index.wxml b/miniprogram/pages/index/index.wxml
index ffb40c8..b4669a1 100644
--- a/miniprogram/pages/index/index.wxml
+++ b/miniprogram/pages/index/index.wxml
@@ -37,7 +37,7 @@
     <section-header eyebrow="FEATURED" title="精选动作" subtitle="编辑精选 · 高效入门" action="全部" bind:action="goRecommend" />
     <scroll-view wx:if="{{featured.length}}" scroll-x class="hscroll">
       <view class="hscroll__item" wx:for="{{featured}}" wx:key="id">
-        <exercise-card exercise="{{item}}" compact bind:tap="onExercise" />
+        <exercise-card exercise="{{item}}" compact catch:tap="onExercise" />
       </view>
     </scroll-view>
     <view wx:else class="empty">暂无数据</view>
diff --git a/miniprogram/pages/plan-detail/plan-detail.js b/miniprogram/pages/plan-detail/plan-detail.js
index 99be52e..982f4dc 100644
--- a/miniprogram/pages/plan-detail/plan-detail.js
+++ b/miniprogram/pages/plan-detail/plan-detail.js
@@ -42,6 +42,7 @@ Page({
   },
 
   onExercise(e) {
+    if (!e || !e.detail || !e.detail.id) return;
     wx.navigateTo({
       url: '/pages/detail/detail?planId=' + encodeURIComponent(this.data.id) +
         '&id=' + encodeURIComponent(e.detail.id)
diff --git a/miniprogram/pages/plan-detail/plan-detail.wxml b/miniprogram/pages/plan-detail/plan-detail.wxml
index b4fbbc2..f70c746 100644
--- a/miniprogram/pages/plan-detail/plan-detail.wxml
+++ b/miniprogram/pages/plan-detail/plan-detail.wxml
@@ -14,7 +14,7 @@
     <view class="list" wx:if="{{exercises.length}}">
       <view class="list__item" wx:for="{{exercises}}" wx:key="id">
         <view class="list__card">
-          <exercise-card exercise="{{item}}" bind:tap="onExercise" />
+          <exercise-card exercise="{{item}}" catch:tap="onExercise" />
         </view>
         <view class="list__remove" data-id="{{item.id}}" catchtap="onRemoveExercise">移除</view>
       </view>
diff --git a/miniprogram/pages/recommend/recommend.js b/miniprogram/pages/recommend/recommend.js
index a517338..8bec1cb 100644
--- a/miniprogram/pages/recommend/recommend.js
+++ b/miniprogram/pages/recommend/recommend.js
@@ -86,6 +86,7 @@ Page({
   },
 
   onExercise(e) {
+    if (!e || !e.detail || !e.detail.id) return;
     wx.navigateTo({ url: '/pages/detail/detail?id=' + encodeURIComponent(e.detail.id) });
   }
 });
diff --git a/miniprogram/pages/recommend/recommend.wxml b/miniprogram/pages/recommend/recommend.wxml
index 7eb67da..3c03109 100644
--- a/miniprogram/pages/recommend/recommend.wxml
+++ b/miniprogram/pages/recommend/recommend.wxml
@@ -71,7 +71,7 @@
             exercise="{{item}}"
             score="{{item.score}}"
             reason="{{item.reason}}"
-            bind:tap="onExercise" />
+            catch:tap="onExercise" />
         </view>
       </view>
       <view wx:else class="empty">{{ loading ? '匹配中…' : '暂无匹配结果' }}</view>
diff --git a/miniprogram/pages/search/search.js b/miniprogram/pages/search/search.js
index 855b1ce..946bc33 100644
--- a/miniprogram/pages/search/search.js
+++ b/miniprogram/pages/search/search.js
@@ -57,7 +57,8 @@ Page({
   },
 
   onExercise(e) {
-    const id = e.detail.id;
+    const id = e.detail && e.detail.id;
+    if (!id) return;
     if (this.data.selectMode && this.data.planId) {
       planSvc.addExercise(this.data.planId, id).then(() => {
         wx.showToast({ title: '已添加', icon: 'success' });
diff --git a/miniprogram/pages/search/search.wxml b/miniprogram/pages/search/search.wxml
index b8b100a..6e8f85a 100644
--- a/miniprogram/pages/search/search.wxml
+++ b/miniprogram/pages/search/search.wxml
@@ -17,7 +17,7 @@
   <view class="section" style="padding-top: 8rpx;">
     <view class="grid" wx:if="{{results.length}}">
       <view class="grid__item" wx:for="{{results}}" wx:key="id">
-        <exercise-card exercise="{{item}}" bind:tap="onExercise" />
+        <exercise-card exercise="{{item}}" catch:tap="onExercise" />
       </view>
     </view>
     <view wx:elif="{{loading}}" class="empty">搜索中…</view>